Exhaust silencer for internal-combustion engines



Jan; 8, 1929. 1,698,198

J. A. MORGAN EXHAUST SILENCER FOR INTERNAL COMBUSTION ENGINES Filed Nov.18. 1926 F/GJ K P H B c D 5 PK QZLLEQJIIIIIIuni i J 5111MB? PatentedJan. 8, 1929.

JAMES AUGUSTUS MORGAN, OF NAMBOUR, QUEENSLAND, AUSTRALIA.

EXHAUST SILENCER FOR INTERNAL-COMBUSTION ENGINES.

Application filed November 18, 1926. Serial No. 149,186.

This invention relates to exhaust silencers for internal combustionengines, and has for its object, more particularly, the production of animproved and simple device by which the noise made by the exhaust isvery greatly, if not entirely, reduced, wlthout interfering with thepower and efliclency 0f the engine. There is free outlet to the exhaustand no back pressure is caused.

In carrying out my invention I provide a cylinder of the requireddiameter and length,

in which a number of holed dies are equidistantly placed. An inlet andan outlet are formed in the respective heads of the cylinder.

In order that the invention may be better understood I will now describeit with the aid of the accompanying drawings, in which Fig. 1 is a partside, part-sectional elevation. V

Fig. 2 is an end sectional elevation.

Fig. 3 is a detail view.

The cylinder A is of the required diameter and length to suit thecapacity of the engine.

. The discs B are equidistantly placed within the cylinder A, distancerings C being interposed between them so as to form compartments D, andthey are each formed with a round hole E and an enlarged hole F, whichlatter is round at one end G and pointed or triangular at the other endH. The centre of the round end G of the hole F is diametrically oppositethe round hole E, both holes being eccentrically placed. The heads J ofthe cylinder A each have a hole K, eccentrically placed, opposite theholes E in the discs B. The holes E and K are of approximately the samediameter. The discs B and rings C are rigidly secured in the cylinder Aand the heads J are secured on the ends thereof by means of a bolt L(and nuts), which passes from end to end, and the discs B are preventedfrom turning round and the holes E and K and F kept in alignment bysuitable means. The simplest arrangement is shown in the drawings,wherein the notches M engage with the ridge N onthe inside of thecylinder A.

Inlet and outlet nipples P are formed on the heads J and the exhaustpipe from the engine is connected to that on the inlet end or" thecylinder A.

In operation the exhaust gases from the engine enter through the inlet Pto the first of the compartments D and as they pass from one compartmentto the other the gases are battled and dissipated, the noise beinggradually broken up and eventually silenced.

The dimensions of the various parts, Width, and number of thecompartments D, and the size of the holes E, F and K depend on thecapacity of the engine and may be varied as required.

Having now particularly described and ascertained the nature or" my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In an exhaust silencer for internal combustionengines, a cylinder, a cylinder head having an eccentrically placedaperture therein disposed on each end of said cylinder, a plurality ofcircular discs each having an eccentrically placed circular hole thereinand an elongated hole semi-circular at one end and pointed at the otherwith the center of its semi-circular end eccentrically placed anddiametrically opposite the center of the first named circular hole, saiddiscs being spacedly arranged in said cylinder with the said circularholes in said disc and the circular holes in said cylinder head inalignment and means for retaining said discs in alignment.

2. In an exhaust silencer for internal combustion engines, a cylinder, acylinder head disposed on each end of said cylinder having aneccentrically placed circular hole therein, a plurality of circulardiscs each having an eccentrically placed circular hole therein and anelongated hole eccentrically placed and diametrically opposite saidcircular hole, said discs being spacedly arranged within said cylinderwith the said circular holes of said discs and the circular holes ofsaid cylinder heads in aligmnent, means for retaining said discs inspaced relation, and means for retaining said discs in alignment.

3. In an exhaust silencer for internal combustion engines, a cylinder, acylinder head disposed on each end of said cylinder having aneccentrically placed circular hole therein, means on one of saidcylinder heads for connecting the exhaust pipe of the engine thereto, aplurality of circular discs Within spaced Within said cylinder with thesaid said cylinder, each having an eccentrieally circular holes of saiddisc and the circular placed circular hole therein and an elongatedholes of said cylinder heads in alignment 10 hole semi-circular at oneend and pointed at and means for securing the cylinder, the

B the other end eccentrically placed and diadiscs and the cylinder headstogether.

metrically opposite the center of the first In testimony whereof I aflixmy signature.

named circular hole, said discs being equally JAMES AUGUSTUS MORGAN.

